| U.S. Presidents Quiz | 0 | - | 5.00 | 3,691,134 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,487 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,098 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,224 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,189 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,586 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,321 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,662 |
| Presidential Middle Names | 0 | - | 4.41 | 60,152 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,227 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,499 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,379 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,201 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,719 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,954 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,907 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,887 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,127 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,978 |
| Countries of the Popes | 0 | - | 4.79 | 127,963 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,115 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,245 |
| First Ladies of the United States | 0 | - | 4.28 | 85,562 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,210 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,985 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,172 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,943 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,805 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,019 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,067 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,932 |
| U.S. President Scramble | 0 | - | 4.40 | 116,686 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,853 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,909 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,801 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,914 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,557 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,530 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,036 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,191 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,754 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,262 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,989 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,998 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,394 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,792 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,697 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,932 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,686 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,896 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,830 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,609 |
| The George Washington Presidency | 0 | - | 4.03 | 14,539 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,718 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,629 |
| The John Adams Presidency | 0 | - | 4.12 | 8,739 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,923 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,731 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,311 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,662 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,840 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,603 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,451 |
| Byzantine History | 0 | - | 4.91 | 28,767 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,990 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,653 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,160 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,346 |
| Name the English Monarchs | 0 | - | 4.91 | 501,847 |
| National Founders | 0 | - | 4.40 | 83,805 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,481 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,176 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,645 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,158 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,430 |
| The Trojan War | 0 | - | 4.83 | 39,672 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,512 |
| Name that Greek Letter | 0 | - | 4.93 | 323,220 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,636 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,661 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,423 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,449 |
| Roman Emperors | 0 | - | 4.95 | 119,745 |
| Basic Harry Potter Quiz | 0 | - | 4.56 | 378,588 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 858,164 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,309 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,631 |
| Pope Facts | 0 | - | 4.39 | 31,217 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,376 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,540 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,182 |
| History of Russia Quiz | 0 | - | 4.49 | 31,897 |
| Flags of Countries That Border France | 0 | - | 4.88 | 122,765 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,911 |
| Countries of the German Empire | 0 | - | 4.51 | 37,885 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,805 |
| Ancient Greek Words | 0 | - | 4.93 | 111,430 |
| History of Italy | 0 | - | 4.55 | 31,952 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,633 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,184 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,168 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,811 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,702 |
| Harry Potter: Voldemort's Horcruxes | 0 | - | 4.44 | 112,685 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,849 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,526 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,843 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,789 |
| History of India | 0 | - | 4.62 | 21,406 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,978 |
| History of South Africa | 0 | - | 4.60 | 17,666 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,769 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,442 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,481 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,811 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,041 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,590 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,376 |
| The Kennedy Family | 0 | - | 3.90 | 14,064 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,179 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,758 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,062 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,940 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,571 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,380 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,477 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,953 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,653 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,776 |
| History of Austria | 0 | - | 4.70 | 17,844 |
| Geography of the French Empire | 0 | - | 4.45 | 27,038 |
| The French Revolution | 0 | - | 4.46 | 23,916 |
| History of France | 0 | - | 4.59 | 56,889 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,466 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,254 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,391 |
| Mythology A-Z | 0 | - | 4.31 | 37,191 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,763 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,582 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,300 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,651 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,636 |
| The Vikings! | 0 | - | 4.46 | 28,331 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| Name the Harry Potter Books | 0 | - | 4.31 | 278,810 |
| Harry Potter Spells | 0 | - | 4.33 | 139,580 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,465 |
| Harry Potter Places | 0 | - | 4.34 | 108,172 |
| Harry Potter - Order of the Phoenix Members | 0 | - | 4.06 | 43,022 |
| Harry Potter Creatures | 0 | - | 4.29 | 64,007 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,316 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,360 |
| Geography of the British Empire | 0 | - | 4.48 | 39,638 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,243 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,602 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,817 |
| History of Iran | 0 | - | 4.66 | 16,344 |
| Vietnam War Countries | 0 | - | 4.82 | 94,121 |
| History of China | 0 | - | 4.37 | 57,101 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,058 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,666 |
| Communist Countries in History | 0 | - | 4.63 | 495,149 |
| Political Movements by Country | 0 | - | 4.46 | 72,485 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,413 |
| Countries of Africa | 0 | - | 5.00 | 2,532,127 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,676 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,694 |
| African East Coast | 0 | - | 4.96 | 95,904 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,716 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,159 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,550 |
| Australian Capitals | 0 | - | 4.92 | 62,707 |
| Australia Map Quiz | 0 | - | 4.95 | 344,068 |
| History of Mexico | 0 | - | 4.58 | 15,297 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,314 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,027 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,941 |
| U.S. States by Governor | 0 | - | 4.43 | 18,048 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,509 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,677 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,656 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,279 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 626,057 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,096 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,973 |
| The American Civil War | 0 | - | 4.62 | 52,384 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,897 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,601 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,193 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,690 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,041 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,138 |
| Official European Union Languages | 0 | - | 4.97 | 238,252 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,690 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,921 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,957 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,725 |
| The Only European Country ... | 0 | - | 4.91 | 216,186 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,878 |
